diff --git a/docs/internals/deprecation.txt b/docs/internals/deprecation.txt
index 9a39c09c33..c281110d61 100644
--- a/docs/internals/deprecation.txt
+++ b/docs/internals/deprecation.txt
@@ -18,6 +18,9 @@ details on these changes.
 * The ``weak`` argument to ``django.dispatch.signals.Signal.disconnect()`` will
   be removed.
 
+* ``django.db.backends.base.BaseDatabaseOperations.check_aggregate_support()``
+  will be removed.
+
 * The ``django.forms.extras`` package will be removed.
 
 * The ``assignment_tag`` helper will be removed.